baber/WOPTO huggingface dataset:
Patent CA-2250186-A1 (CA)
Inventor: WOMER DANIEL EDWARD
IPC: A61P25/06
Filed: 1997-03-24
Abstract: Technique de traitement de la douleur due à la migraine par administration d'une dose analgésique d'olanzapine.
Patent CA-2252477-A1 (CA)
Inventor: RICHARDSON HUBERT JR
IPC: F04C27/00
Filed: 1998-11-02
Abstract: A scroll compressor includes a scroll set in which fluids at various operating pressures impart a plurality of forces on the scroll set orbiting and fixed scroll members. An axial biasing force is applied against the orbiting scroll member urging same toward the fixed scroll member. Fluid at discharge pressure exerts an axial force at a first area of the back surface of the orbiting scroll member which urges the orbiting scroll member toward the fixed scroll member to maintain axial compliance therebetween and to prevent leakage of compressed refrigerant fluid during compressor operation. An axial anti-biasing force is applied between the orbiting and fixed scroll members to urge them apart. An annular chamber provided between the end plates of the orbiting and fixed scroll members forms a cavity that is in communication with fluid contained in pockets of compression in the scroll set. The fluid in the pockets of compression is at a pressure intermediate discharge and suction pressures. A passage provided in the scroll set communicates the intermediate pressure fluid from the pockets of compression to the intermediate pressure cavity. The intermediate pressure fluid acts upon the opposing face surfaces of the orbiting and fixed scroll members urging them apart. In this manner, an unbiasing force is exerted between the scroll members to offset excessive axial biasing forces which may act upon the orbiting scroll member, thereby preventing excessive wear and power consumption and providing enhanced operating efficiency. The intermediate force effectively acts as a cushion to lessen the biasing force at the higher end of the operating range.
Patent CA-2252579-A1 (CA)
Title: A device to hold an anastomotic site of coronary artery motionless and bloodless for the bypass operation
Inventor: TAKAHASHI MASAO
IPC: A61B17/30
Filed: 1997-11-20
Abstract: The present invention is to provide an improved device to hold an anastomotic site of coronary artery for the bypass surgery; to provide said device wherein the coronary artery bypass operation can be quickly, and accurately performed on the beating heart by firmly and atraumatically holding said anastomotic site motionless and bloodless. That is to say, the characteristic feature of the present invention is in that the coronary artery can be stably held motionless without need to forcedly compress the heart surface.      This is accomplished with a circular flexible suction device which surrounds the target artery, and whose center is open to expose the anastomotic site. The device is suctioned to the heart surface by drawing off the air in the flexible circular channel, creating negative pressure.
Patent CA-2252877-A1 (CA)
Title: Method and composition for modifying the surface of an object by graft polymerization
Inventor: KATOOT MOHAMMAD W
IPC: C08F2/48
Filed: 1997-04-23
Abstract: The present invention relates to several novel compositions and methods employing infrared radiation, microwave radiation or high voltage polymerization for modifying the surfaces of materials to impart desired characteristics thereto. More particularly, the present invention relates to a method for modifying the surfaces of objects to increase the lubricity, hydrophilicity, hydrophobicity, or biofunctionality of the surface of the object.
Patent CA-2254779-A1 (CA)
Inventor: KNIGHT JAMES T
IPC: H04N1/327
Filed: 1998-11-18
Abstract: A system for delivery of facsimile messages over non real time or a time delayed network, such as the Internet, includes an originating conversion and routing device connecting a source facsimile device to an Internet service provider. A destination conversion and routing device interconnects the Internet and the public switched telephone network and a Hub controls the data intercommunication between the originating and destination devices.
Patent CA-2254838-A1 (CA)
Title: Developing roller and method of producing the same
Inventor: HIRAYAMA NAKA
IPC: B23P15/00
Filed: 1998-11-30
Abstract: A developing roller is provided with a roller core, an electrically conductive layer provided on a circumferential surface of the roller core, and a covering layer provided on the outer circumferential surface of the conductive layer. The covering layer has a thickness of 30 µm or less, but 0. 1 µm or more, and has at least its surface region formed of a porous body.
Patent CA-2256207-A1 (CA)
Title: Method for manufacturing a casting-die body and a casting-die body
Inventor: RODE DIRK
IPC: B22D11/059
Filed: 1998-12-15
Abstract: A casting-die body (1) made of a hardenable copper alloy is provided with an inner wear-protective layer (7) of chromium whose hardness decreases from the billet-side surface (8) in the direction of the casting-die body (1). The wear-protective layer (7) is made up of two chromium layers (9, 10). For this purpose, the casting-die body (1) is given a solution heat treatment, is chromium plated, and is then hardened, as a result of which the initially very high hardness of the chromium layer (9) is reduced.  The hardness of the chromium layer (9) then is about 650 HV. Subsequently, to increase the wear protection, the second chromium layer (10) is applied. The result is a conventional chromium-plated layer having a hardness of between 850 HV and 1050 HV.
Patent CA-2256811-A1 (CA)
Inventor: NOTARGIACOMO MASSIMO
IPC: H04B10/2543
Filed: 1998-12-21
Abstract: The present invention relates to a method and circuit for pre-distorting a signal to eliminate the non-linearities of the input/output characteristics of non-linear stages, and in particular to eliminate third-order non-linearities. More particularly, it relates to a method and circuit for pre-distorting, for external optical modulators of the Mach-Zehnder type.     The method for pre-distorting an electrical signal comprises the stages of: -   supplying the said signal to at least one distorting circuit; -   supplying a current to the said distorting circuit along a first conducting path; -   distorting the said signal in the said distorting circuit; characterized in that the said stage of supplying a current to the said distorting circuit comprises the stage of supply a current to a second conducting path parallel to the said first conducting path.
Patent CA-2257527-A1 (CA)
Title: Method and apparatus for providing calling service features within incompletely upgraded cellular telephone networks
Inventor: BERTACCHI LUCIANO
IPC: H04Q7/38
Filed: 1997-05-16
Abstract: For a call (50, 100) received by an originating switching node (12(1)) in a cellular telephone network (10) that does not support all upgraded calling service features (52), the all is redirected and transited (60) for further handling to an upgraded service switching node (12(2)). Alternatively, the call is redirected and transited only when the originating switching node has not been upgraded to support subscripted to calling service features (64) or a certain initiated calling service feature (74). As another alternative, the call is handled by the originating switching node (i.e., through connected to a service switching node (82)) up until such time as a calling service feature is initiated (84), and is then redirected and transited (94) if the initiated calling service feature is not supported (86).
Patent CA-2258419-A1 (CA)
Title: Prandtl layer turbine
Inventor: CONRAD WAYNE ERNEST
IPC: A47L5/22
Filed: 1999-01-08
Abstract: An apparatus comprising a longitudinally extending housing having a fluid inlet port; a plurality of spaced apart members rotatably mounted in the housing to transmit motive force between fluid introduced through the fluid inlet port and the members and to separate the fluid into at least two fluid streams; and, a fluid outlet port positioned on the housing for receiving each fluid stream.
Patent CA-2258939-A1 (CA)
Inventor: YAMAGUCHI HIROSHI
IPC: H03K5/13
Filed: 1999-01-14
Abstract: An integrated circuit has a first circuit which receives an input signal and outputs a first output signal, wherein the first output signal is produced by changing the pulse width of the input signal, a second circuit which receives the first output signal and outputs a second output signal, wherein the second output signal is produced by delaying the first output signal and a control circuit.  The control circuit has a first control circuit which receives the first and second output signals and controls the first circuit based on the first and second output signals and a second control circuit which receives the first and second output signals and controls the second based on the first and second output signals.
Patent CA-2264863-A1 (CA)
Title: Process for r-epimer enrichment of 16,17-acetal derivatives of 21-acyloxy pregan-1,4-dien-11.beta.,16.alpha.,17.alpha.-triol-3,20-dione derivatives
Inventor: GUTTERER BEATE
IPC: C07J71/00
Filed: 1997-08-29
Abstract: The invention describes a process for epimer enrichment of compounds of formula (I) where R1 1 and R2 are as defined in the description, by fractional crystallization.
Patent CA-2267490-A1 (CA)
Inventor: PACKARD THOMAS N
IPC: H02H3/00
Filed: 1999-03-30
Abstract: A single pole arc fault circuit interrupter with miswire detection includes a first terminal for connection to the hot line of a power source, a circuit interrupter connected to the first terminal; a second terminal for connection to the hot line of an electrical load; a third terminal for connection to a neutral line of a power source; a fourth terminal, connected to the third terminal for connection to the neutral line of an electrical load; a fifth terminal for connection to the ground line of an electrical power source; a circuit interrupter connected between the first terminal and the second terminal; an arc detector coupled in circuit relationship between the first terminal and the second terminal, the arc detector having an output for producing a signal when an arc is sensed; a neutral-ground potential detector connected between the third terminal and the fifth terminal, the neutral-ground potential detector having an output producing a signal when a voltage is detected between the third and fifth terminals; and a controller connected to the arc detector and the neutral-ground potential detector for operating the circuit interrupter for disconnecting the first terminal from the second terminal when either an arc is detected, as indicated by the presence of a signal at the output of the arc detector, or a hot/neutral reversal is detected as indicated by the presence of a signal at the output of the neutral-ground potential detector.
Patent CA-2268312-A1 (CA)
Inventor: POTEMPA KEVIN JOHN
IPC: F25J3/04
Filed: 1999-04-07
Abstract: A serial column system for producing relatively large quantities of both high purity nitrogen gas and high purity nitrogen liquid using a first column producing the high purity gas and a second column producing the high purity liquid, with second column top fluid refluxing the first column.
Patent CA-2268515-A1 (CA)
Inventor: ACKLES GARY
IPC: B23D57/00
Filed: 1999-04-08
Abstract: The articulated boom and utility head for manipulating objects underwater of the present invention includes an articulated arm mounted at a first end thereof to a free floating platform, and a remotely operable utility head mountable at a second end of the arm. At least one sensor for relaying sensed information from the sensor to a remote operator or processor is mounted to the articulated arm. The sensed information is transmitted in real time as the arm is remotely operated under water.
Patent CA-2269963-A1 (CA)
Title: High density high performance telecommunications/data link and connector with tap and contact displacement assembly
Inventor: SNOW RICHARD HERBERT
IPC: H01R24/84
Filed: 1999-04-26
Abstract: A telecommunications/data link-and-connector assembly having a contact displacement (CDA) cable with a plurality of transmission lines, and having first and second interface end assemblies respectively disposed at opposite ends of the CDA  cable. Each interace end assembly has a contact alignment body with a line end and an interface end, and also has contact elements and a housing in a locking engagement with the interface end of the contact alignment body. The contact elements are respectively disposed on the contact alignment body and extend from a position adjacent the line end toward the interface end. Each contact element is movable between a contact position and a non-contact position, and has a contact area and a line connection area for an electrical connection with a respective line. A housing on either end of the telecommunications/data link-and-connector assembly is capable of assuming a mated state with a housing on either end of a further telecommunications/data link-and-connector assembly.  Respective contact elements in the mated housings make contact in the contact area and a tap is insertable between the contact elements. Insertion of the tap allows electrical signals to be tapped from the contact elements.
Patent CA-2270149-A1 (CA)
Title: Single chip vlsi implementation of a digital receiver employing orthogonal frequency division multiplexing
Inventor: COLLINS MATTHEW JAMES
IPC: H04L27/26
Filed: 1997-10-22
Abstract: The invention provides a single chip implementation of a digital receiver for multicarrier signals that are transmitted by orthogonal frequency division multiplexing. Improved channel estimation and correction circuitry are provided. The receiver has highly accurate sampling rate control and frequecy control circuitry. BCH decoding of tps data carriers is achieved with minimal resources with an arrangement that includes a small Galois field multiplier.  An improved FFT window synchronization circuit is coupled to the resampling circuit for locating the boundary of the guard interval transmitted with the active frame of the signal. A real-time pipelined FFT processor is operationally associated with the FFT window synchronization circuit and operates with reduced memory requirements.
Patent CA-2271016-A1 (CA)
Title: Process for the formation of a fuel mixture and for its ignition in a pre-chamber that is open toward the cylinders
Inventor: RIGAZZI PIER ANDREA
IPC: F02B17/00
Filed: 1997-11-03
Abstract: Process for ensuring the mixing of a predetermined quantity of liquid or gaseous fuel with the air that is contained in a pre-chamber (1) with one end that is open toward cylinders (6) of an alternative internal-combustion engine, as well as the ignition of said mixture, with the fuel being injected axially from closed end (1c) of pre-chamber (1) by means of an injector (2) that is actuated by a predefined surplus of pressure (.DELTA.p) compared to that which is present in pre-chamber (1) itself, said injection is accomplished during the terminal phase of the compression half-cycle, whereby injector (2) and surplus (.DELTA.p) are such as to ensure that fuel jet (5) which is injected is completely evaporated and/or mixed with the air that is contained in pre-chamber (1) at the moment when it reaches said open end (1a) of the pre-chamber and which, during its translation motion, mixes with the above-mentioned air according to mixture richness (R) values that can be represented by a predetermined curve (7) that rises from injection point (A) towards center (C) of said open-end (1a) of pre-chamber (1).
Patent CA-2271064-A1 (CA)
Inventor: BIRGLECHNER WERNER
IPC: A61C19/00
Filed: 1998-04-01
Abstract: Tooth polishing paste holder a cup member, a connector member and a base member. The cup has an inner wall. The inner wall has a circumference less than 10 cm. The connector connects the cup to the base. The base is adapted to support the cup in an upright position on a horizontal surface.
Patent CA-2274027-A1 (CA)
Inventor: VITORI CHRISTOPHER M
IPC: D21D5/02
Filed: 1997-12-15
Abstract: A system and method for treating a waxed fiber paper product with a high wax content to remove a substantial portion of the wax content includes the pulping of the wax paper fiber at an elevated temperature in excess of the melting temperature of the wax to separate a pulp fraction and to form an emulsion of water and molten wax. The pulp fraction is separated from the emulsion by filtering in a reverse pressure screen (30) in which a finely perforated screen (45) defines a high pressure side and a low pressure side, and a major portion of the water/emulsion is removed from the suspension through the screen perforations (45) leading from the high pressure side to the low pressure side in which a rotor and foil arrangement (50, 52) within the reverse screen (30) is operated under such conditions that the suspension at the high pressure side of the screen (30) is maintained in a constant fluidized condition.
Patent CA-2276172-A1 (CA)
Title: Production method of metallic iron
Inventor: NEGAMI TAKUYA
IPC: C21B13/00
Filed: 1997-12-26
Abstract: A method for producing a molten iron from a compact containing a carbonaceous reductant and an iron oxide is carried out extremely efficiently with a simple operation.      The compact is supplied to a molten iron bath or a molten slag on the molten iron bath so as to float on the molten iron bath and/or the molten slag such that a part of most of the compact surface is substantially exposed to a high temperature gas atmosphere in the furnace for taking in a reduced iron generated by the reduction of the iron oxide in the compact.
Patent CA-2279112-A1 (CA)
Inventor: GUERET JEAN-LOUIS H
IPC: A61K8/36
Filed: 1999-07-28
Abstract: Patch et procédé de traitement cosmétique de la peau au moyen de ce patch, ce dernier étant constitué d'une matrice polymérique, ladite matrice étant auto-adhésive sur peau sèche, et contenant au moins un composé cosmétiquement actif, et au moins un composé hydroabsorbant, ledit procédé consistant à sélectivement, appliquer le patch: a) en mode nettoyage sur peau sèche, le décollement du patch après application permettant, sous l'action mécanique résultant de l'adhérence du patch, de débarrasser la peau des impuretés qu'elle contient, ou b) en mode traitement à l'état mouillé, le (ou les) composé(s) hydroabsorbants permettant d'une part, de conserver une adhérence de la matrice sur la peau, laquelle adhérence est réduite par rapport à adhérence de la matrice sur peau sèche, et d'autre part, en absorbant de l'eau, de resolubiliser tout ou partie des composés cosmétiquement actifs contenus dans la matrice.
Patent CA-2280615-A1 (CA)
Inventor: OVERBEY FRED A JR
IPC: F24H9/00
Filed: 1999-08-17
Abstract: A water heater that includes a water container, a combustion chamber, adjacent the water container, having at least one inlet to admit air and extraneous fumes into the combustion chamber, at least one inlet comprising a metal plate through which pass a plurality of ports, the ports comprising a plurality of slots and holes, each slot having a quenching distance and each hole having a quenching distance and being capable of confining ignition and combustion of said extraneous fumes within the combustion chamber; and a burner associated with the combustion chamber and arranged to combust fuel to heat water in the container.
Patent CA-2283389-A1 (CA)
Inventor: KLOOSTERMAN JOHN C
IPC: A47B23/00
Filed: 1999-09-07
Abstract: This invention is a desk that enables a person to read and write while lying down, it was designed for people who have a back or other physical impairments which prevents them from sitting in an upright position. This desk can be used by anyone who enjoys comfortable reading. The desk is light, portable, and can be used on most beds, floors, mattresses as well as outside on your lawn or patio. This desk does not store your books, pencils, ect. it simply provides a structure for a book or magazine to be viewed through a sheet of glass. It also has a writing pad that can be easily reached to take notes etc.
Patent CA-2285756-A1 (CA)
Inventor: ADAMS WILLIAM R
IPC: A63F9/24
Filed: 1999-10-08
Abstract: Methods of playing games and gaming devices useful with playing games whereby the gaming device comprises a first gaming unit for displaying a randomly selected combination of indicia and the means for generating at least one signal corresponding to the first gaming unit. The gaming device also comprises a second gaming unit for displaying an interactive driving video game whereby the second gaming unit is operatively connected to the first gaming unit and the second gaming unit becomes actuable or is activated in response to the signal generated by the first gaming unit.
Patent CA-2291904-A1 (CA)
Title: Seismic and fire resistant slotted shaft wall stud
Inventor: HERREN THOMAS R
IPC: E04F17/00
Filed: 1999-12-08
Abstract: A stud for construction of fire resistant and seismic resistant shaft walls (10), including but not limited to elevator shafts and stairwells. The claimed metal stud is used for constructing shaft wall assemblies which can withstand vertical, and horizontal movements due to seismic forces, wind sway, and inter-story drift resulting from gravity and the rotation of the earth. This stud comprises: an anterior flange (11);  posterior flange (14) which is longer than the anterior flange ( 11 ) possessing a plurality of parallel horizontal fastening slots (17) along the length of the posterior flange (14); and a vertical web (18) connecting the anterior flange (11 ) and posterior flange (14) in parallel forming a generally J-shaped channel. The longer posterior flange with fastener slots permits the construction if the shaft wall assembly solely from within the shaft cavity.
Patent CA-2292376-A1 (CA)
Inventor: NAKAMA KENICHI
IPC: G02B5/18
Filed: 1999-12-06
Abstract: An optical wavelength demultiplexer has at least two optical fibers and a two-dimensional array of photodetectors arranged in as many rows as the number of optical fibers and as many columns as the number of demultiplex channels. Any one of said optical fibers and a central line of one of said rows which corresponds to said any one of the optical fibers are spaced equal distances from the optical axis of a focusing element such as a collimator lens or a concave diffraction grating. A light ray emitted from any one of the optical fibers is demultiplexed by a planar or concave diffraction grating into light rays, which are applied to a corresponding row of photodetectors to produce output signals in the respective demultiplex channels. The planar diffraction grating and the collimator lens, or the concave diffraction grating is shared by the at least two optical fibers which provide input capabilities.
Patent CA-2294265-A1 (CA)
Title: Vehicule pour charges lourdes avec dispositif de securite antisurcharge
Inventor: ROSENBERG PETER
IPC: B60P1/48
Filed: 1998-06-15
Abstract: L'invention concerne un véhicule pour charges lourdes, en particulier pour le transport de scories, comportant une plate-forme de chargement pour des cuves à scories, comprenant un dispositif de préhension destiné à recevoir et à déplacer un porte-charge normalisé, qui peut être actionné par des vérins hydrauliques (11). Ce véhicule comporte également un dispositif de sécurité de basculement (15) agissant pendant le déplacement du porte-charge. Au moins un des vérins hydrauliques (11) est pourvu de commutateurs dont au moins un, lorsque le piston effectue une course prédéterminée, met en circuit un appareil de mesure de pression, destiné à la mesure de la pression hydraulique dans le vérin, sur un côté ou sur les deux côtés du piston, cet appareil de mesure de pression déclenchant, en cas de dépassement d'une valeur de consigne préréglable de la pression, un dispositif de sécurité, ce qui se traduit, par exemple, par une indication destinée au conducteur ou par un blocage du fonctionnement.